A pool of standing water could be hiding A. flash flood currents that could sweep your car away. B. deep sinkholes. C. all of the above.

A pool of standing water could be hiding the deep sinkholes that are present in the pool for draining the water away. So, the correct option that matches with statement above is B.

Standing water refers to a condition of water in the pool when it is more still than the movements displaced by the way of waves and there is very less atmospheric pressure on the water.

Hence, the correct statement will be A pool of standing water could be hiding deep sinkholes present in the pools that drain away the water. And the correct option is B.

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B. deep sinkholes

all fossil fuels are nonrenewable, so think coal, gasoline, things that we will eventually run out of. all fossil fuels are nonrenewable resources, but not all nonrenewable recourses are fossil fuels. these resources are not being renewed as fast as we are using them. i hope this considering there weren't any answer choices.